Two locking device of swift current car safety are prevented to beam -pumping unit

The utility model relates to a two locking device of swift current car safety are prevented to beam -pumping unit. Brake of beam -pumping unit internal expanding type and outer problem of embracing the easy swift current car in formula brake back that prior art exists have mainly been solved. Its ch...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	JIN HUOQING, LU JIPING, LIU HONGDUN, WANG WENPING, XU CHENGLIANG, JIN HONGYING, CHEN SHUJUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING SAFETY DEVICES IN GENERAL THERMAL INSULATION IN GENERAL WEAPONS
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